I am not very knowledgeable about Jeeps, but I notice several listed here as Make: AMC / Model: Jeep CJ-#
What's that all about? AMC as the make? I thought AMC was just the parent company for some years, and Jeep was the make. Please enlighten me about this naming convention

http://www.imcdb.org/vehicles_make-AMC_model-Jeep.html